Ball-Lock Punch Blanks
Pre-hardened M2 HSS blanks with ball-lock teardrop groove already machined. Machine your own custom tip geometry in-house using wire EDM, surface grinding, or CNC milling. Available in ejector and regular types.
When to Buy Blanks Instead of Finished Punches
Custom Tip Geometry Required
Non-standard hole shapes (D-cut, keyway, custom profile) that are not available as standard catalog items.
Why blanks fit: Start with a pre-hardened blank with ball-lock groove already machined, then wire EDM or grind your custom tip shape. Saves the cost and lead time of full custom punch manufacturing.
High-Volume In-House Toolroom
Shops with wire EDM or precision grinding capability that can produce tips faster and cheaper than ordering finished custom punches.
Why blanks fit: Buy blanks at 30-50% less than finished punches, machine tips in-house within hours. The ball-lock groove and heat treatment are already done — the hardest steps are completed.
Blanks vs Finished Punches — Cost Comparison
| Factor | Buy Finished Punch | Buy Blank + Machine In-House |
|---|---|---|
| Unit cost | $30-$80 (standard geometry) | $15-$40 (blank) + $10-$20 (machining) |
| Custom geometry cost | $80-$200+ (custom order) | $15-$40 (blank) + in-house labor |
| Lead time (standard) | 1-3 days from stock | Same-day (if blank in stock) |
| Lead time (custom) | 2-4 weeks | 1-2 days (in-house capability) |
| Minimum order | 1 piece | 1 piece |
| Requires | Nothing — ready to install | Wire EDM or precision grinder |
Engineering Resources
Application Scenarios
Punch blanks are the right choice in these situations:
In-House Custom Punch Fabrication
Die shops with wire EDM capability that fabricate non-standard punch geometries for special applications.
Blanks arrive pre-hardened (HRC 62-64) with ball-lock groove already machined. You only add the custom tip shape. Saves 40-60% vs ordering finished custom punches.
Emergency Punch Replacement
Urgent replacement scenarios where waiting for a finished custom punch would mean extended press downtime.
With blanks in stock, your tool room can fabricate a replacement punch in hours instead of waiting days for a custom order.
Frequently Asked Questions
What machining operations are needed to finish a blank?+
What hardness are blanks supplied at?+
Can blanks be heat-treated after machining?+
Related Product Categories
Need a Custom Quote?
Send your specifications and receive a quote. MOQ: 1 piece. Custom dimensions available.